<!DOCTYPE html>
<html lang="zh-cn">
    <head>
        <meta charset="UTF-8"/>
        <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
        <title>类-原型方法</title>
    </head>
    <body>
        <h1>类-原型方法</h1>
        <p>来源:<a href="https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Classes">https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Classes</a></p>
        <script>
            class Rectangle {
                // constructor
                constructor(height, width) {
                    this.height = height;
                    this.width = width;
                }
                // Getter
                get area() {
                    return this.calcArea()
                }
                // Method
                calcArea() {
                    return this.height * this.width;
                }
            }
            const square = new Rectangle(10, 10);

            console.log(square.area);
            // 100
        </script>
    </body>
</html>